US2025226956A1PendingUtilityA1

Semi-known transmission configuration indicator state

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Assignee: QUALCOMM INCPriority: May 27, 2022Filed: May 27, 2022Published: Jul 10, 2025
Est. expiryMay 27, 2042(~15.8 yrs left)· nominal 20-yr term from priority
Inventors:Qiaoyu LiChanghwan ParkTao LuoMahmoud Taherzadeh BoroujeniHamed PezeshkiTaesang YooArumugam Chendamarai KannanTianyang Bai
H04B 7/06968H04B 7/0695H04L 5/0051H04W 72/21H04W 72/231H04B 7/088H04L 5/0048H04L 5/0023H04L 5/0094H04W 48/16H04L 5/0053H04W 72/54
51
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Claims

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a transmission configuration indicator (TCI) state. The UE may determine that the TCI state is a semi-known TCI-state based at least in part on a known TCI state condition not being satisfied and a TCI state prediction condition being satisfied. The UE may apply a TCI state switching delay timeline that is associated with semi-known TCI states. Numerous other aspects are described.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A user equipment (UE) for wireless communication, comprising:
 a memory; and   one or more processors, coupled to the memory, configured to:
 identify a transmission configuration indicator (TCI) state; 
 determine that the TCI state is a semi-known TCI-state based at least in part on a known TCI state condition not being satisfied and a TCI state prediction condition being satisfied; and 
 apply a TCI state switching delay timeline that is associated with semi-known TCI states. 
   
     
     
         2 . The UE of  claim 1 , wherein the one or more processors, to identify the TCI state, are configured to identify the TCI state based at least in part on a medium access control control element (MAC CE) that activates or updates the TCI state. 
     
     
         3 . The UE of  claim 1 , wherein the one or more processors, to identify the TCI state, are configured to identify the TCI state from among TCI states that are in an activated TCI state list. 
     
     
         4 . The UE of  claim 1 , wherein the one or more processors, to identify the TCI state, are configured to identify the TCI state from among TCI states that are outside an activated TCI state list. 
     
     
         5 . The UE of  claim 1 , wherein known TCI state conditions include:
 a TCI state switch command is received within 1280 milliseconds after a last reference signal for beam reporting or measurement;   at least one Layer 1 reference signal received power report is transmitted for the TCI state before receiving the TCI state switch command;   the TCI state remains detectable during a TCI state switching period; and   a synchronization signal block associated with the TCI state remains detectable during the TCI state switching period.   
     
     
         6 . The UE of  claim 1 , wherein the TCI state prediction condition is satisfied if channel characteristics for a reference signal (RS) resource are predicted within a prediction duration. 
     
     
         7 . The UE of  claim 6 , wherein the channel characteristics that are predicted include a Layer 1 RS received power that is reported without receiving the RS or measuring the RS. 
     
     
         8 . The UE of  claim 6 , wherein the channel characteristics are predicted based at least in part on transmitting a preference for using the RS resource as a Type D quasi-co-location source without transmitting a Layer 1 RS received power report. 
     
     
         9 . The UE of  claim 6 , wherein the channel characteristics are predicted based at least in part on a preference for using the RS resource as a Type D quasi-co-location source without transmitting a Layer 1 RS received power report, and wherein the preference is not transmitted. 
     
     
         10 . The UE of  claim 6 , wherein the prediction duration is preconfigured for a specified prediction scenario. 
     
     
         11 . The UE of  claim 1 , wherein the one or more processors are configured to determine that the TCI state is capable of being a semi-known TCI state without signaling from a network entity. 
     
     
         12 . The UE of  claim 1 , wherein the one or more processors are configured to determine that the TCI state is capable of being a semi-known TCI state based at least in part on signaling from a network entity. 
     
     
         13 . The UE of  claim 12 , wherein the signaling includes a radio resource configuration message that indicates that the UE is able to determine whether the TCI state is capable of being a semi-known TCI state. 
     
     
         14 . The UE of  claim 12 , wherein the signaling includes a TCI state activation command. 
     
     
         15 . The UE of  claim 12 , wherein the signaling includes a medium access control control element message that is dedicated to activating TCI states and that is associated with semi-known TCI states. 
     
     
         16 . The UE of  claim 1 , wherein the one or more processors are configured to transmit an applicability indication that indicates that the UE is applicable to using semi-known TCI states. 
     
     
         17 . The UE of  claim 16 , wherein the applicability indication also indicates a preference for which TCI states are to be associated with a semi-known status. 
     
     
         18 . The UE of  claim 1 , wherein the one or more processors are configured to transmit a preference indication of a preference for which TCI states are to be associated with a semi-known status. 
     
     
         19 . The UE of  claim 1 , wherein the one or more processors are configured to transmit, in an acknowledgement of a TCI state activation command, an association indication that indicates whether a semi-known status is associated with the TCI state. 
     
     
         20 . The UE of  claim 1 , wherein the one or more processors are configured to transmit a prediction duration indication of a preference for a prediction duration in which a prediction is to be made. 
     
     
         21 . The UE of  claim 1 , wherein the TCI state switching delay timeline associated with semi-known TCI states does not include a first delay for measuring a channel state information reference signal (RS) or a synchronization signal block and does not include a second delay for reporting a Layer 1 RS received power measurement. 
     
     
         22 . The UE of  claim 1 , wherein the TCI state switching delay timeline associated with semi-known TCI states does not include a first delay for measuring a channel state information reference signal (RS) and does not include a second delay for reporting a Layer 1 RS received power measurement. 
     
     
         23 . The UE of  claim 1 , wherein the TCI state switching delay timeline includes a dedicated delay for Layer 1 measurement reporting for semi-known TCI states. 
     
     
         24 . The UE of  claim 23 , wherein the one or more processors are configured to reduce a beam sweeping factor in response to the TCI state being a semi-known TCI state. 
     
     
         25 . A user equipment (UE) for wireless communication, comprising:
 a memory; and   one or more processors, coupled to the memory, configured to:
 identify a transmission configuration indicator (TCI) state; 
 determine that a known TCI state condition is not satisfied and a TCI state prediction condition is satisfied; and 
 apply a TCI state switching delay timeline that is associated with known TCI states. 
   
     
     
         26 . A network entity for wireless communication, comprising:
 a memory; and   one or more processors, coupled to the memory, configured to:
 receive a preference indication that indicates a preference associated with determining whether a transmission configuration indicator (TCI) state is semi-known; and 
 transmit a configuration that includes a capability for determining whether a TCI state is a semi-known TCI state. 
   
     
     
         27 . The network entity of  claim 26 , wherein the one or more processors, to receive the preference indication, are configured to receive the preference indication in an acknowledgement of a TCI state activation command. 
     
     
         28 . The network entity of  claim 26 , wherein the preference indication includes a preference for a prediction duration in which a prediction is to be made. 
     
     
         29 . The network entity of  claim 26 , wherein the one or more processors are configured to apply a TCI state switching delay timeline associated with semi-known TCI states. 
     
     
         30 . The network entity of  claim 26 , wherein the configuration reduces a beam sweeping factor for semi-known TCI states.

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